400–1000 mm
Pipe ID range
80 / 200 m
Std / max length
Servo drive
Self-propelled
In-pipe cam
Live view
Overview
The SP400Ultra Pipe Coating Robot from Suqian Spray Intelligent Equipment Technology Co., Ltd. is a high-efficiency industrial robot designed mainly for anti-corrosion joint coating after pipeline welding. A retractable, hidden camera paired with an external display lets operators clearly see the pipe interior, while remote body-height adjustment fits different diameters. Mechanical automation and PLC control reach construction spots manual workers cannot - turning a slow, risky hand task into a controlled, repeatable process.
Why It Stands Out
Performance
Purpose-built for field-joint (post-weld) coating
The SP400Ultra is engineered mainly for anti-corrosion joint coating after pipeline welding - the girth-weld 'repair' pass that standard full-length lining robots are not optimized for.
Servo-motor driven, self-propelled travel
Unlike hand-pulled units, the SP400Ultra drives itself through the pipe on a servo motor, holding a steady, repeatable travel speed for uniform film build.
Remote body-height lift
Chassis height is raised and lowered by remote control to suit different pipe diameters, covering a wide bore range with one machine.
Reaches where crews can't
Mechanical automation plus PLC precise control puts coating exactly where manual workers struggle to reach - long, narrow, or hazardous runs included.
Retractable camera + external display
A hidden, extendable camera streams the pipe interior to an external screen, so the operator clearly sees wall condition and spray coverage without entering the pipe.
Specifications
| Parameter | Specification |
|---|---|
| Model | SP400Ultra |
| Adaptable Pipe Diameter (Inner) | 400–1000 mm |
| Travel | Servo-motor driven (self-propelled) |
| Standard Working Length | 80 m |
| Max. Working Length | 200 m |
| Power Supply | 220V |
| Air Supply Requirement | ≥ 0.3 MPa |
| Atomization | High-pressure airless |
| Sprayable Materials | Solvent-free epoxy, high-build anti-corrosion paint, coal tar epoxy, PU polyurethane, 8710, phenolic anti-corrosion paint, vinyl anti-corrosion paint, quick-dry enamel, etc. |
Where It Works
- Long-distance oil & gas transmission pipelines (girth-weld field joints)
- Post-weld anti-corrosion repair on laid or spooled pipe
- Municipal and industrial pipeline rehabilitation
- Any bore (400–1000 mm ID) where interior visibility and consistent film matter
Questions Buyers Ask
What is the SP400Ultra for, specifically?
It is built for anti-corrosion field-joint coating - the anti-corrosion pass applied after pipeline sections are welded together - rather than full-length internal lining.
How does the operator see inside the pipe?
A retractable, hidden camera transmits the interior view to an external display, giving real-time visibility of wall condition and spray coverage.
Does it move on its own?
Yes. A servo motor drives the unit through the pipe, so travel speed stays steady and the coating film stays consistent without manual pulling.
What diameters and lengths does it cover?
Inner diameters from 400 mm to 1000 mm, with 80 m standard working length and up to 200 m maximum per run.
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